pH - Dissolved Oxygen


pH & Dissolved Oxygen

With increasing legislation and environmental demands, accurate measurement and control of wastewater parameters is essential for the treatment of effluents to reduce the impact of industry on the environment.

The simplest and most useful of these is pH, the measurement of acidity and alkalinity of the solution. pH is one of the most common analytical measurements used in process control as many chemical reactions rely on the pH of a process being maintained at the correct value. By using accurate pH measurement it is possible to automate and improve the efficiency of a process minimising waste and reducing costs. 

pH instrumentation and sensors used to monitor the effluent from a factory can identify if the effluent requires treatment before it is discharged within the required consent levels. This minimises the effects of the waste on the environment ensuring operators comply with local legislation and laws.

Dissolved Oxygen measurement can be applied to a variety of industries and applications where accurate control is required to improve and optimize processes.  Dissolved Oxygen is a term used for the measurement of the amount of oxygen dissolved in a unit volume of water.

In sewage treatment, where bacteria is used to decompose the solids, it is important to accurately control the Dissolved Oxygen level as when the level is too low, the bacteria die and decomposition stops.
Dissolved Oxygen measurement is also used in fermentation processes in beer and wine production where the measurement and control of oxygen is required to maintain a quality product.

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Optical Sensor for Dissolved Oxygen Monitoring

The OxyTechw² RDO Pro-X Sensor uses the latest optical technology for measuring dissolved oxygen (DO) in demanding wastewater, drinking water, industrial effluent and surface water environments.

The sensor uses optical sensing techniques that provide a fast response and do not need a flowing sample to operate. There is no need for routine calibration, enabling manual intervention to be kept to an absolute minimum. Periodic validation of the measurement can be done as part of standard quality assurance performed by the operator. The sensor uses an extended life cap that does not have a finite life, though replacement is recommended every two years. When replacement of the cap is required the operation takes only a few minutes with no need to enter complex set up codes and no need to re-calibrate.

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